On Thu, Sep 26, 2002, Zhihui Zhang wrote:
> On Thu, 26 Sep 2002, Claus Assmann wrote:

> > If someone is interested:
> > http://www.sendmail.org/~ca/email/sm-9-rfh.html

> > Just as a small data point: I get message acceptance rates of
> > 400msgs/s on a journalling file system (using a "normal" PC) that
> > writes the data into the journal too. AFAICT that's due to the fact
> > that fsync() is much fast for this kind of storage.
> > 
> > The important part for mailservers here is the rate at which content
> > files can by safely written to disk. From my limited experience
> > journalling file systems are here much better than softupdates.

> Can you tell me the approximate sizes of these mails and how they are
> stored?

The test for sendmail 9 were made with small sizes (1-4KB).  They
were stored in flat files using 16 directories.

The performance tests for sendmail 8 were done with sizes from 1
to 40 KB, in a single queue directory (AFAIR).

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